The violet-bellied hummingbird (Juliamyia julie) is a species of hummingbird in the family Trochilidae. It is monotypical in the genus Juliamyia. It is found in Colombia, Ecuador, Panama, and Peru; it can occasionally be seen in Costa Rica. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, and heavily degraded former forest.
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